Pretend that you want to determine the relationship between caffeine intake and performance on a midterm exam.As students sit down to take the exam,you ask them to write the number of cups of tea,soda,or coffee they ingested two hours prior to the exam.You also obtain their exam scores.You calculate the correlation coefficient between the two variables to be +0.82.What can you conclude?
A) The more caffeine students consumed, the better their scores.
B) 82 percent of the students consumed caffeine prior to the exam.
C) Students with low scores didn't consume caffeine.
D) Students who drink caffeine are smarter than those who don't drink caffeine.
Correct Answer:
Verified
Q44: A case study
A)is an in-depth look at
Q45: The _ is a manipulated experimental factor
Q46: A researcher is conducting an experiment to
Q48: Dr.Okawa is interested in studying the effect
Q50: Third variables are also called _.
A) confederates
B)
Q51: Professor Wong measured the intelligence and temperament
Q55: The goal of _ research is to
Q61: Professor Izadi is interested in the association
Q72: _ refers to researchers' allocation of participants
Q79: Longitudinal research involves
A)observing and measuring the same
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents